KR102210587B1 - Liquid crystal display device - Google Patents

Abstract

An object of the present invention is to provide a method for improving light leakage or color mixture defects that occur as a result of using a complex bent black matrix.
To this end, in the present invention, for the first pattern part, which is a part of the black matrix located on the data line, the first side of the shape protruding outward in one direction of the data line is an electrode pattern generating an electric field in the pixel area and The second side having the same complex bending shape and concave into the inside is formed in the same bending shape as the color filter pattern.
Accordingly, even if the black matrix is shifted in one direction of the data wiring, a space that does not partially overlap between the concave part of the first pattern part of the black matrix and the color filter pattern does not occur, so that light leakage due to the occurrence of the space However, the color mixture defect can be improved.

Description

Liquid crystal display device

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of improving light leakage or color mixture defects caused by using a black matrix having a complex bent shape.

As the information society develops, the demand for display devices for displaying images is increasing in various forms, and in recent years, liquid crystal display devices (LCD), plasma display panels (PDP), organic Various flat display devices such as OLED (organic light emitting diodes) are being used.

Among these flat panel display devices, liquid crystal display devices are widely used because they have advantages of miniaturization, weight reduction, thinness, and low power driving. A liquid crystal display device displays an image by driving a liquid crystal by generating an electric field between a pixel electrode and a common electrode.

In order to realize a wide viewing angle and fast response speed of liquid crystals, an IPS (in-plane switching) liquid crystal display in which pixel electrodes and common electrodes with alternating electrode patterns are formed together on the array substrate to drive the liquid crystal with a horizontal electric field. The device was proposed. Furthermore, recently, an AH-IPS (Advanced High Performance IPS) liquid crystal display device has been proposed in which one of the pixel electrode and the common electrode is composed of a plate shape and the other is composed of an electrode pattern to generate a fringe field. .

1 is a plan view schematically showing a color filter substrate of a conventional AH-IPS liquid crystal display device.

Referring to FIG. 1, a color filter substrate 20 of a liquid crystal display device includes a black matrix BM having an opening op corresponding to each pixel region P, and a color corresponding to each pixel region P. The filter pattern CF is formed. The black matrix BM and the color filter pattern CF are formed so that the edges of both sides overlap each other.

On the other hand, although not specifically shown, on the array substrate located under the color filter substrate 20, a gate wiring extending in the horizontal direction and a data wiring crossing the gate wiring to define a pixel region are formed, and an insulating layer is interposed therebetween. A plate-shaped pixel electrode and a common electrode composed of a plurality of electrode patterns are disposed.

The data wiring between each pixel region P and the pixel electrode disposed thereon and the common electrode adjacent to the pixel region P is a first pattern part BM1 that is a part of the black matrix BM located on the data wire. It is composed of substantially the same shape.

In this regard, the first pattern part BM1 of the black matrix BM forms a center line CL and a first inclination angle θ1 of the pixel region P along the horizontal direction, while forming one side in the horizontal direction (that is, the drawing The first part (B1) bent in the left direction of the image) and the second part (B1), which are connected to the upper and lower ends of the first part (B1), have a second inclination angle (θ2) greater than the first inclination angle (θ1), and are symmetrical to each other. And three parts (B2, B3). In other words, the first pattern portion BM1 has a complex bending shape, that is, a complex bending shape at both sides of the center line CL and the center line CL.

The pixel area P has a complex bending shape of substantially the same shape as the first pattern part BM1, so that the pixel area P has a central portion corresponding to the first part B1 of the first pattern part BM1. Using as the boundary region, a so-called multi domain in which the liquid crystal arrangements of the upper region and the lower region are symmetric can be implemented.

On the other hand, the color filter pattern CF corresponding to the pixel region P has a shape different from that of the first pattern portion BM1 of the black matrix BM where the edges overlap. That is, the color filter pattern CF corresponding to the pixel area P has a shape that is bent once, that is, a single bent shape, to one side in the horizontal direction while substantially having the center line CL and the second inclination angle θ2. .

In this way, since the color filter pattern CF and the first pattern part BM1 overlapping each other have different bending shapes, misalignment between the black matrix (BM) and the color filter pattern (CF) when manufacturing the color filter substrate. ) Occurs and the position of the black matrix BM is shifted in the horizontal direction, as shown in FIG. 2, a light leakage defect occurs in the vicinity of the first part B1 of the first pattern part BM1. do.

That is, since the first part B1 of the first pattern part BM1 has a shape in which the right side Sr is more concave inward compared to the other parts B2 and B3, it is located in the pixel area Pr on the right side. It is located closer to the side of the corresponding color filter pattern CFr.

Therefore, when the position of the black matrix BM is shifted to the left, the first part B1 does not overlap with the right color filter pattern CFr, so a non-overlapping space LA is generated between them, Light leakage is caused through the spaced space (S).

Meanwhile, the color filter patterns CFl and CFr of the neighboring pixel regions Pl and Pr may be configured to overlap each other on the first part BM1 of the black matrix. In this case, color mixing through the spaced space S It causes defects.

An object of the present invention is to provide a method for improving light leakage or color mixture defects that occur as a result of using a complex bent black matrix.

In order to achieve the above-described problem, the present invention provides a first signal wiring between a second pixel region and a first pixel region disposed adjacent to each other along a first direction, and in each of the first and second pixel regions, At least one is an array substrate including a pixel electrode having a plurality of electrode patterns and a common electrode, and a first having first and second side sides corresponding to the first signal wiring and corresponding to the first and second pixel regions, respectively. And a color filter substrate including a black matrix including a pattern portion and a color filter pattern corresponding to each of the first and second pixel regions and overlapping an edge with the first pattern portion, and the first side A first side portion that forms a reference line parallel to the first direction and a first inclination angle, and is connected to both ends of the first side portion, and forms a second inclination angle larger than the reference line and the first inclination angle, and is symmetrical to each other. It is composed of two and three side portions, the second side of the reference line and the second inclined angle and bent in the first direction, the electrode pattern is configured to have the same shape as the first side, the color filter pattern It provides a liquid crystal display having the same shape as the second side.

Here, the first signal wiring may have the same shape as the first side.

And a second signal line crossing the first signal line, and the first and second signal lines may be data lines and gate lines, respectively.

The black matrix may include a second pattern portion corresponding to the gate wiring.

An insulating layer disposed between the common electrode and the pixel electrode may be included.

In the present invention, for the first pattern part, which is a part of the black matrix located on the data line, the first side of the shape protruding to the outside in one direction of the data line is the same as the electrode pattern generating an electric field in the pixel area. The second side of the shape is configured in a shape and is concave into the inside of the color filter pattern and has the same bent shape.

Accordingly, even if the black matrix is shifted in one direction of the data wiring, a space that does not partially overlap between the concave part of the first pattern part of the black matrix and the color filter pattern does not occur, so that light leakage due to the occurrence of the space However, the color mixture defect can be improved.

1 is a plan view schematically showing a color filter substrate of a conventional AH-IPS liquid crystal display device.
FIG. 2 is a diagram illustrating a state in which a light leakage defect occurs when a position of a black matrix having a complex bent shape is shifted in a horizontal direction in a conventional liquid crystal display device.
3 and 4 are plan views schematically showing an array substrate and a color filter substrate of a liquid crystal display according to an exemplary embodiment of the present invention, respectively.
5 is a view showing a curved shape of an electrode pattern of a common electrode according to an embodiment of the present invention.
6 is a view showing a bending shape of a black matrix according to an embodiment of the present invention.
7 is a diagram illustrating a case in which a position of a black matrix is shifted in a horizontal direction according to an embodiment of the present invention.
8 is a cross-sectional view taken along line VIII-VIII of FIGS. 3 and 4;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

3 and 4 are plan views schematically showing an array substrate and a color filter substrate of a liquid crystal display according to an exemplary embodiment of the present invention, respectively, and FIG. 5 is a bending shape of an electrode pattern of a common electrode according to an exemplary embodiment of the present invention. Fig. 6 is a view showing a bending shape of a black matrix according to an embodiment of the present invention.

A liquid crystal display according to an embodiment of the present invention includes an array substrate 110, a color filter substrate 210, which is an opposite substrate, and a liquid crystal layer filled between the array substrate and the color filter substrates 110 and 210. do.

Referring to FIG. 3, the array substrate 110 includes a plurality of gate wirings 122 extending in a horizontal direction, which is a first direction, and a second direction crossing the gate wiring 122 on the inner surface of the first substrate. A plurality of data lines 152 extending along the vertical direction are formed. A plurality of pixel regions P arranged in a matrix form within a display region displaying an image are defined by the gate wiring and the data wiring 122 and 152 intersecting as described above.

In particular, in the embodiment of the present invention, it is preferable that the portion of the data line 152 corresponding to the pixel region P is configured to have a complex bending shape in the same manner as the pixel electrode and the common electrodes 172 and 182. Detailed description will be given later.

Meanwhile, in the embodiment of the present invention, a pixel arrangement structure of a Z inversion method is exemplified. In this regard, each data line 152 may be configured to be alternately connected to pixel regions P located on both sides in the width direction. That is, one side of the data line 152 is connected to the pixel area P connected to the (2n-1)-th gate line 122 (that is, the pixel area P located on the (2n-1)-th row line). The other side of the data line 152 may be configured to be connected to a pixel area P connected to the 2n-th gate line 122 (ie, a pixel area P located on the 2n-th row line).

In such a connection structure, when dot inversion is implemented, each data line 152 receives data voltages of the same polarity during each frame. That is, the data driving circuit outputs a data voltage of the same polarity to the data line 152 during each frame. Accordingly, the voltage output fluctuation width of the data driving circuit, that is, the swing width is reduced, so that power consumption can be reduced.

Meanwhile, a pixel arrangement structure different from the pixel arrangement structure of the Z inversion driving method may be applied.

In the pixel region P, a thin film transistor T connected to the corresponding gate and data lines 122 and 152 is formed. The thin film transistor T includes a gate electrode 124, a semiconductor layer 142, and source and drain electrodes 154 and 156.

The gate electrode 124 is connected to the gate wiring 122 and may be formed in the same process as the gate wiring 122. The semiconductor layer 142 is positioned on the gate electrode 124 with a gate insulating layer therebetween, and may be made of amorphous silicon, but is not limited thereto.

The source and drain electrodes 154 and 156 are positioned to be spaced apart from each other on the semiconductor layer 142. The source electrode 154 is connected to the data line 152, and the source and drain electrodes 154 and 156 may be formed in the same process as the data line 152.

The source electrode 154 may be formed to have a “U” shape, and in this case, the channel of the semiconductor layer 142 is also configured to have a “U” shape, but is not limited thereto.

In the above description, the thin film transistor T having an inverted staggered structure has been described as an example, but the present invention is not limited thereto. For example, a thin film transistor having a co-planar structure may be used.

The pixel electrode 172 is connected to the drain electrode 156 of the thin film transistor T in the pixel region P and has a substantially plate shape. The pixel electrode 172 and the drain electrode 156 may be formed such that portions overlapping each other directly contact each other. As another example, at least one insulating layer is formed between the drain electrode 156 and the pixel electrode 172, and the pixel electrode 172 is connected to the pixel electrode 172 through a drain contact hole exposing the drain electrode 156. Can be configured to contact.

A common electrode 182 is formed on the pixel electrode 172 substantially over the entire display area. The common electrode 182 may be configured to have a plurality of bar-shaped electrode patterns 183 extending along the second direction corresponding to the pixel electrodes 172 of each pixel region P. In addition, an opening 184 may be formed between the plurality of electrode patterns 183.

As described above, an electric field is generated between the common electrode 182 and the pixel electrode 172 formed on the same substrate, and the liquid crystal layer can be driven by the electric field.

In the above description, the structure in which the pixel electrode 172 having a plate shape in the pixel region P and the common electrode 182 having a plurality of electrode patterns 183 are disposed thereon has been described as an example, but limited to this. It doesn't work.

For example, a structure in which a plate-shaped common electrode 182 and a pixel electrode 172 having a plurality of bar-shaped electrode patterns are disposed thereon may be used.

As another example, a common electrode 182 having a plurality of electrode patterns and a pixel electrode 172 having a plurality of electrode patterns are positioned on the same layer or on different layers with an insulating film therebetween, and the electrode pattern of the common electrode 182 And the electrode patterns of the pixel electrodes 172 are alternately arranged in the pixel region P may be used.

On the other hand, in the embodiment of the present invention, the common electrode 182, that is, the electrode pattern 183 of the common electrode 182 has a complex bending shape, and the pixel electrode 172 also has the same complex bending shape. The bent shape will be described in more detail with reference to FIG. 5 showing the electrode pattern 183 of the common electrode 182.

The electrode pattern 183 of the common electrode 182 is bent in one horizontal direction (i.e., the left direction in the drawing) based on the reference line CL parallel to the horizontal direction, which is the extension direction of the gate wiring 122. A second inclination angle that is connected to the first portion 183a inclined at the first inclination angle θ1 and both ends of the first portion 183a (that is, the upper and lower ends of the drawing) and is greater than the first inclination angle θ1 It is composed of second and third portions 183b and 183c that have (θ2) and are symmetrical to each other. Here, the reference line CL may correspond to a center line of the pixel area P substantially along the horizontal direction.

In this way, the electrode pattern 183 is configured to have a complex bending shape in a form of complex bending at both sides of the reference line CL and the reference line CL.

Due to such a complex bending shape, the first domain region D1 corresponding to the upper second part 183b is set as the boundary region CA in the pixel region P, with the central portion corresponding to the first part 183a. ) And the liquid crystal arrangement of the second domain region D2 corresponding to the lower third portion 183c can be effectively implemented.

In this regard, the second and third portions 183b and 183c have a relatively small degree of bending (ie, inclination with respect to the vertical direction), so that the electrode pattern 183 is replaced with the second and third portions 183b and 183c. ) Only to form a single bending shape, when an external force is applied, the boundary between domain regions collapses, resulting in spots.

As such, by forming the boundary region CA having a relatively large degree of bending between the first and second domain regions D1 and D2, it is possible to prevent the boundary between the domain regions from collapsing, thereby preventing the occurrence of spots. Can be prevented.

As described above, by forming the electrode pattern 183 of the common electrode 182 in a complex bending shape, the openings 184 disposed between the electrode patterns 183 also have the same bending shape. In addition, the pixel electrode 172 that generates an electric field together with the common electrode 182 and the data wiring 152 located on both sides of the pixel region P and defining the boundary of the pixel region P are provided with an electrode pattern ( Like 183), it is formed in a complex bending shape. Accordingly, the pixel region P as a whole has a complex bending shape.

Referring to FIG. 4, a black matrix BM and a color filter pattern CF are formed on a color filter substrate 210 facing the array substrate 110 configured as described above.

The black matrix BM is formed in a lattice shape along the periphery of the pixel area P to cover the non-display elements of the array substrate 110, and therein is an opening op which transmits light corresponding to the pixel area P. ).

The color filter pattern CF is formed to cover the opening op of the black matrix BM and overlap the black matrix BM and the edge. The color filter pattern CF is, for example, red (R), green (G), and blue (B) colors corresponding to the red (R), green (G), and blue (B) pixel areas P, respectively. It may include a filter pattern CF. The color filter pattern CF may be formed in the form of a stripe pattern extending in units of column lines.

The color filter patterns CF corresponding to the neighboring pixel regions P may be formed to be spaced apart or overlap each other on the black matrix BM therebetween. In the embodiment of the present invention, a case that is spaced apart from each other is exemplified. .

The black matrix (BM) is composed of a first pattern portion (BM1) extending in the vertical direction corresponding to the data wiring 152 and a second pattern portion (BM2) extending in the horizontal direction corresponding to the gate wiring (122). Can be. That is, the first pattern portion BM1 is positioned on both sides of the opening op in the horizontal direction facing each other, and the second pattern portion BM2 is positioned on both sides of the opening op in the vertical direction facing each other. .

The first pattern portion BM1 covers the lower data line 152, and the second pattern portion BM2 covers the lower gate line 122 and the thin film transistor T.

On the other hand, in the embodiment of the present invention, the color filter pattern CF has a single bending shape. In particular, the first pattern part BM1 of the black matrix BM has a single bending shape similar to the color filter pattern CF and the side side of the shape concave into the inside (that is, the right side in the drawing). The protruding side (ie, the left side in the drawing) is configured to have the same complex bending shape as the electrode pattern 183 of the common electrode 182.

The characteristic bending shape of the first pattern portion BM1 will be described in more detail with reference to FIG. 6.

Among both sides of the first pattern part BM1 in the width direction, the first side side S1, which is a side of the first pattern part BM1, protruding to the outside is one side of the data wiring 152 (that is, in the drawing). The second side (S2), which is located corresponding to the first pixel area (P1), which is a pixel area located on the left), is concave into the inside of the first pattern part (BM1) is the other side of the data line (152). It is located corresponding to the second pixel area P2, which is a pixel area located on the right side of the drawing.

The first side S1 is in a horizontal direction based on the reference line CL parallel to the horizontal direction (that is, from the second pixel area P2 to the first pixel area P1 as the left direction in the drawing). The first side portion SL1 that is bent and has a first inclination angle θ1 and a second inclination angle that is connected to both ends (ie, upper and lower ends of the drawing) of the first side portion SL1 and is greater than the first inclination angle θ1 ( It is composed of second and third side portions SL2 and SL3 which have θ2) and are symmetrical to each other. As such, the first side S1 has a complex bending shape similar to the common electrode 182.

The second side S2 positioned opposite the first side S1 is formed to have a second inclination angle θ2 by bending in one direction in the horizontal direction based on the reference line CL parallel to the horizontal direction. That is, the second side S2 is composed of fourth and fifth side portions SL4 and SL5 extending parallel to the second and third side portions SL2 and SL3 of the first side S1 from the reference line CL. . As such, the second side S2 has a single bending shape.

Meanwhile, the color filter pattern CF corresponding to the pixel region P is configured to have a single bending shape in the same manner as the second side S2 of the first pattern portion BM1. That is, both sides of the color filter pattern CF have the same bending shape as the second side S2.

As above, by forming the second side S2 of the first pattern portion BM1 of the black matrix BM in the same shape as the color filter pattern CF, conventional light leakage or color mixing can be improved. In this regard, further reference may be made to FIG. 7. 7 is a diagram illustrating a case in which the position of a black matrix is shifted in a horizontal direction according to an embodiment of the present invention.

In the conventional case, as shown in FIG. 2, as both sides constitute the first pattern part BM1 having a complex bending shape, when the position of the black matrix BM is shifted to the left, the other part is In comparison, a spacing space LA, which is a non-overlapping space between the first part B1 and the right color filter pattern CFr, which is further concave into the interior, is generated, and thus, a light leakage defect is caused through the spacing space LA.

On the other hand, as shown in FIG. 7, according to the embodiment of the present invention, the second side side S2, which is the right side of the shape concave into the first pattern part BM1, is a corresponding color filter pattern ( CFr) (that is, the color filter pattern CFr of the second pixel region P2) has the same bending shape. That is, the second side side S2 of the first pattern part BM1 is arranged parallel to the side (ie, the left side) of the color filter pattern CFr on the corresponding right side, so that the first pattern part BM1 and the right side The overlapping width of the color filter pattern CFr of is the same as a whole.

Accordingly, even if the black matrix (BM) is shifted to the left, a space (LA in FIG. 2) that does not partially overlap between the black matrix (BM) and the color filter pattern (CFr) does not occur as in the prior art. . Therefore, a light leakage defect due to the occurrence of a conventional spaced space can be improved.

In addition, when the adjacent color filter patterns CFl and CFr are overlapped on the black matrix BM, color mixture defects through the conventional spaced space may also be improved.

Hereinafter, a cross-sectional structure of a liquid crystal display device according to an exemplary embodiment of the present invention will be described with reference to FIG. 8. 8 is a cross-sectional view taken along line VIII-VIII of FIGS. 3 and 4.

Referring to FIG. 8, a gate wiring 122 and a gate electrode 124 are formed on the inner surface of the first substrate 111 on the array substrate 110. Meanwhile, although not shown in detail, a common wire may be formed on the same layer as the gate wire 122 and made of the same material, and connected to the common electrode 182.

On the gate wiring 122 and the gate electrode 124, a gate insulating layer 130 is formed substantially along the entire surface of the first substrate 111. The gate insulating layer 130 is an inorganic insulating material, and may be formed of, for example, silicon oxide (SiO ₂ ) or silicon nitride (SiNx).

A semiconductor layer 142 is formed on the gate insulating layer 130 to correspond to the gate electrode 124. The semiconductor layer 142 may be made of amorphous silicon, but is not limited thereto.

Source electrodes and drain electrodes 154 and 156 spaced apart from each other are formed on the semiconductor layer 142. The source electrode 154 is connected to the data line 152 formed on the gate insulating layer 130.

The gate electrode 124, the semiconductor layer 142, and the source and drain electrodes 154 and 156 constitute a thin film transistor T.

On the drain electrode 156, a pixel electrode 172 in contact with the drain electrode 156 and formed in a plate shape corresponding to the pixel region P is formed. Meanwhile, as another example, an insulating film is formed on the drain electrode 156, a pixel electrode 172 is formed on the insulating film, and the pixel electrode 172 contacts the drain electrode 156 through a contact hole formed in the insulating film. Can be configured to The pixel electrode 172 may be formed of a transparent conductive material such as ITO or IZO.

A passivation layer 175 may be formed on the first substrate 111 on which the pixel electrode 172 is formed.

The protective layer 175 may be formed of an inorganic insulating material such as silicon oxide (SiO ₂ ) or silicon nitride (SiNx), or an organic insulating material such as photoacrylic or benzocyclobutene (BCB).

A common electrode 182 is formed on the passivation layer 175 substantially over the entire display area. The common electrode 182 may include a plurality of electrode patterns 183 extending along the extending direction of the data line 152 while facing the lower pixel electrode 172 corresponding to the pixel region P. In addition, an opening 184 may be formed between the plurality of electrode patterns 183. The common electrode 182 may be formed of a transparent conductive material such as ITO or IZO.

Meanwhile, although not specifically shown, an alignment layer formed along the entire substrate may be formed on the common electrode 182.

In the foregoing description, a structure in which the plate-shaped pixel electrode 172 and the common electrode 182 having a plurality of electrode patterns 183 are disposed thereon has been described as an example, but the present invention is not limited thereto. For example, a structure in which a plate-shaped common electrode 182 and a pixel electrode 172 having a plurality of electrode patterns with an insulating layer interposed therebetween may be used.

As another example, a common electrode 182 having a plurality of electrode patterns 183 and a pixel electrode 172 having a plurality of electrode patterns are positioned on the same layer or on different layers with an insulating layer therebetween, and the common electrode 182 A structure in which the electrode patterns of and the electrode patterns of the pixel electrodes 172 are alternately arranged in the pixel region P may be used.

The electrode pattern 183 of the common electrode 182 is formed to have a complex bending shape. Likewise, the pixel electrode 172 and the data wiring 152 are also formed in a complex bending shape.

In the color filter substrate 210 facing the array substrate 110 with the liquid crystal layer 190 interposed therebetween, a black matrix BM and a color filter pattern CF are formed on the inner surface of the second substrate 211.

The black matrix BM is a non-display element of the array substrate 110 and is formed in a grid shape along the periphery of the pixel area P to cover the data line 152, the gate line 122, and the thin film transistor T. The inside of the, has an opening op that transmits light corresponding to the pixel region P.

The black matrix BM may include a first pattern portion BM1 extending to correspond to the data line 152 and a second pattern portion BM2 extending to correspond to the gate line 122.

The color filter pattern CF is formed to cover the opening op and overlap the black matrix BM and the edge. Meanwhile, the adjacent color filter patterns CF may be formed to be spaced apart or overlapped with each other on the black matrix BM.

A planarization layer 220 may be formed along the entire surface of the substrate on the black matrix and the color filter patterns BM and CF. Although not specifically shown, an alignment layer may be formed on the planarization layer 220.

The color filter pattern CF is formed in a single bent shape. On the other hand, the first pattern part BM1 of the black matrix BM has a complex bending shape similar to the data wiring 156 in the first side side S1 protruding to the outside, and has a concave shape. The second side S2 is formed to have a single bending shape similar to the color filter pattern CF.

As the first pattern portion BM1 of the black matrix BM is configured in this manner, even if the position of the black matrix BM is shifted in the horizontal direction, the portion that is concave into the first pattern portion BM1 and It is possible to prevent a non-overlapping spaced space between the corresponding color filter patterns CF, so that light leakage or color mixture defects can be improved.

In the above-described embodiment, the gate wiring, which is a signal line extending in the horizontal direction and transmitting the gate signal in the drawing, the data wiring, which is a signal line extending in the vertical direction and having a complex bent shape and transmitting a data signal, and data A liquid crystal display device using a black matrix having a first pattern portion overlapping with a color filter pattern adjacent to each other in a characteristic bending shape and extending in correspondence with the wiring has been described as an example.

On the other hand, as another example, a data line, which is a signal line that extends in the horizontal direction and transmits a data signal in the drawing, a gate line, which is a signal line that extends in the vertical direction and has a complex bent shape and transmits a gate signal, and a gate A liquid crystal display device using a black matrix having a first pattern portion that extends corresponding to the wiring and overlaps with the neighboring color filter patterns in a characteristic bending shape may be used.

The above-described embodiment of the present invention is an example of the present invention, and can be freely modified within the scope of the spirit of the present invention. Accordingly, the present invention includes modifications of the present invention within the scope of the appended claims and equivalents thereto.

110: array substrate 111: first substrate
122: gate wiring 124: gate electrode
130: gate insulating film 142: semiconductor layer
152: data wiring 154: source electrode
156: drain electrode 172: pixel electrode
175: protective layer 182: common electrode
183: electrode pattern 184: opening
190: liquid crystal layer 210: color filter substrate
211: second substrate 220: planarization layer
BM: Black Matrix
BM1, BM2: first and second pattern portions
S1, S2; 1st and 2nd sides
SL1, SL2, SL3, SL4, SL5: 1st, 2nd, 3rd, 4th, 5th sides
θ1, θ2: first and second inclination angles
CL: baseline

Claims (5)

A first signal wiring between the second pixel region and the first pixel region disposed adjacent to each other along the first direction,
An array substrate including a common electrode and a pixel electrode having a plurality of electrode patterns in each of the first and second pixel regions;
A black matrix including first pattern portions corresponding to the first signal wiring and having first and second side sides respectively corresponding to the first and second pixel regions;
A color filter substrate corresponding to each of the first and second pixel regions and including a color filter pattern overlapping an edge with the first pattern part,
The first side has a first inclination angle with a reference line parallel to the first direction, a first side bent in the first direction, and a second side connected to both ends of the first side and greater than the reference line and the first inclination angle It is composed of second and third sides that form an inclination angle and are symmetrical to each other,
The second side forms the second inclination angle with the reference line and is bent in the first direction,
The electrode pattern has the same shape as the first side, and the color filter pattern has the same shape as the second side.
Liquid crystal display.

The method of claim 1,
The first signal wiring has the same shape as the first side
Liquid crystal display.
The method of claim 1,
Including a second signal wiring crossing the first signal wiring,
The first and second signal wirings are data wiring and gate wiring, respectively.
Liquid crystal display.
The method of claim 3,
The black matrix includes a second pattern part corresponding to the gate wiring.
Liquid crystal display.
The method of claim 1,
An insulating film positioned between the common electrode and the pixel electrode
Liquid crystal display device comprising a.

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